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公开(公告)号：US20170090063A1
公开(公告)日：2017-03-30
申请号：US15311708
申请日：2014-06-25
IPC分类号： G01V7/06
CPC分类号： G01V7/06
摘要： A gravitational logging method includes obtaining gravitational field measurements from a permanent array of downhole or subsea sensor units. The method also includes inverting the gravitational field measurements as a function of position to determine a reservoir property. A related system includes a permanent array of downhole or subsea sensor units to obtain gravitational field measurements. The system also includes a processing unit that inverts the gravitational field measurements as a function of position to determine a reservoir property.
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82.发明申请SYSTEM AND METHOD FOR TWO DIMENSIONAL GRAVITY MODELING WITH VARIABLE DENSITIES 审中-公开具有可变密度的二维重建模型的系统和方法公开(公告)号：US20160334537A1
公开(公告)日：2016-11-17
申请号：US15111228
申请日：2015-01-05
申请人： CGG Services SA
发明人： Xiong LI , Barry WIGGINS
IPC分类号： G01V7/06
CPC分类号： G01V7/06
摘要： Systems and methods for to two dimensional gravity modeling with variable densities are disclosed. The methods may include a method of modeling the density of a subsurface formation is disclosed. The methods may include generating a plurality of cells in a cross section of density values corresponding to a subsurface formation. The methods may further include assigning a density value to each cell. The methods may further include calculating a gravity effect for each cell based upon the density value. The methods may further include recording the gravity effect for each cell in a data structure.
摘要翻译： 公开了用于具有可变密度的二维重力建模的系统和方法。 该方法可以包括对地下地层的密度建模的方法。 所述方法可以包括在对应于地下地层的密度值的横截面中产生多个单元。 所述方法还可以包括向每个小区分配密度值。 该方法还可以包括基于密度值计算每个单元的重力效应。 所述方法还可以包括在数据结构中记录每个单元的重力效应。
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83.发明授权公开(公告)号：US09316761B2
公开(公告)日：2016-04-19
申请号：US13357786
申请日：2012-01-25
摘要： An apparatus and method for estimating reservoir connectivity using gravity estimates at a fluid contact for each of two or more boreholes. The method may include identifying fluid contacts in the boreholes. The method may include additional gravity estimates at and/or between a well head and the fluid contact of each borehole. The method may include gravity estimates along a surface between well heads of the boreholes. The method may include estimating true vertical depth for the boreholes. The apparatus may include at least one gravimeter and a processor configured to estimate reservoir connectivity using estimates from the gravimeter.
摘要翻译： 一种用于使用两个或更多个钻孔中的每一个的流体接触处的重力估计来估计储层连通性的装置和方法。 该方法可以包括识别钻孔中的流体接触。 该方法可以包括在井头和每个钻孔的流体接触之间和/或之间的额外的重力估计。 该方法可以包括沿着钻孔的井头之间的表面的重力估计。 该方法可以包括估计钻孔的真实垂直深度。 该装置可以包括至少一个重力计和配置成使用来自重力仪的估计来估计储层连接性的处理器。
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公开(公告)号：US20140081595A1
公开(公告)日：2014-03-20
申请号：US14006174
申请日：2012-03-12
IPC分类号： G01V7/06
摘要： We describe improved techniques for airborne gravity gradiometer surveys. In particular we describe a method and system for performing a gravity gradiometer survey of a surveyed region of terrain, the method comprising: providing an aircraft with a gravity gradiometer; flying said aircraft over said terrain at a speed of at least 100 m/s and at an average height above said terrain of above said terrain of at least 300 m; and collecting gravity gradient data for said surveyed region of terrain from said gravity gradiometer, said gravity gradient data comprising data for at least one component of the gravity gradient tensor.
摘要翻译： 我们描述了机载重力梯度计调查的改进技术。 特别地，我们描述了一种用于对受测区域进行重力梯度计测量的方法和系统，所述方法包括：为飞机提供重力梯度计; 以至少100米/秒的速度在所述地形上飞行所述飞机，平均高度高于所述地形以上至少300米的平均高度; 以及从所述重力梯度计收集所述被测区域的重力梯度数据，所述重力梯度数据包括重力梯度张量的至少一个分量的数据。
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公开(公告)号：US20090177402A1
公开(公告)日：2009-07-09
申请号：US12162070
申请日：2007-01-24
摘要： A method of interpolation between a plurality of field gradient tensors including the steps of: accessing a plurality of field gradient data; formatting said plurality of field gradient data into 3-dimensional tensors of rank 2; determining a rotational matrix and a structural matrix for each tensor; interpolating said structural matrices; detecting errors in the raw data only apparent using the rotational component. interpolating said rotational matrices as quaternions on the surface of a unit 4-sphere; reconstructing said structural matrices and said rotational matrices to yield field gradient tensors at the interpolation points, wherein the interpolation is between two said field gradient tensors, the field gradient tensors being expressed as 3×3 matrices of values, each resolved into a rotational matrix and a structural matrix with three diagonal components.
摘要翻译： 一种在多个场梯度张量之间进行内插的方法，包括以下步骤：访问多个场梯度数据; 将所述多个场梯度数据格式化为秩2的3维张量; 确定每个张量的旋转矩阵和结构矩阵; 内插所述结构矩阵; 检测原始数据中的错误仅使用旋转分量显而易见。 将所述旋转矩阵内插到单位4-球体表面上的四元数; 重建所述结构矩阵和所述旋转矩阵以在内插点产生场梯度张量，其中所述内插在两个所述场梯度张量之间，所述场梯度张量表示为3×3的矩阵，每个分解成旋转矩阵和结构 矩阵具有三个对角线分量。
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86.发明申请Phase extraction between coupled atom interferometers using ellipse-specific fitting 审中-公开使用椭圆特定拟合的耦合原子干涉仪之间的相位提取公开(公告)号：US20050027489A1
公开(公告)日：2005-02-03
申请号：US10640878
申请日：2003-08-14
申请人： Mark Kasevich , Gregory Foster , Jeffrey Fixler , Jeffrey McGuirk
发明人： Mark Kasevich , Gregory Foster , Jeffrey Fixler , Jeffrey McGuirk
摘要： There is provided a method for phase extraction between coupled atom interferometers using ellipse-specific fitting. The method includes fitting an ellipse to data representing a first gravimeter measurement and a second gravimeter measurement, and determining a phase shift between the first gravimeter measurement and the second gravimeter measurement based on a spread of the data around the ellipse.
摘要翻译： 提供了一种使用椭圆特定拟合的耦合原子干涉仪之间的相位提取方法。 该方法包括将椭圆拟合到表示第一重力仪测量和第二重力仪测量的数据，以及基于围绕椭圆的数据的扩展来确定第一重力计测量和第二重力仪测量之间的相移。
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87.发明授权
公开(公告)号：US5218864A
公开(公告)日：1993-06-15
申请号：US805282
申请日：1991-12-10
申请人： Kent A. Pennybaker
发明人： Kent A. Pennybaker
IPC分类号： G01V7/06
CPC分类号： G01V7/06
摘要： Conventional surface gravity measurements, either land, sea, or sea bottom, are made along a line that lies approximately along the same surface orientation as the deviated well. Borehole gravity measurements are made in the deviated part of the well along the wellbore at stations lying approximately below those taken on the surface. The gravity difference is computed from the station pairs. From the gravity difference and the vertical distance between the two readings, the average density is computed for all the station pairs. From a depth model interval depths at each layer between the surface and the borehole stations are computed. The average density between any station pairs can be related to the interval densities and the layer densities are calculated.
摘要翻译： 常规的地表重力测量，陆地，海洋或海底，沿着大致沿着与偏斜井相同的表面取向的线制成。 钻井重力测量是沿着井的偏离部分沿着井眼进行的，其位于大致低于在表面上的台站。 重力差是从车站对计算的。 从重力差和两个读数之间的垂直距离计算所有站对的平均密度。 从深度模型中，计算表面和井眼站之间的每层的深度。 任何站对之间的平均密度可以与间隔密度相关，并且计算层密度。
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88.发明授权Method for detecting subsurface mineral bodies using gravity magnetic and topographic surveys 失效使用重力磁场和地形测量法检测地下矿体的方法
公开(公告)号：US4068160A
公开(公告)日：1978-01-10
申请号：US682410
申请日：1976-05-03
申请人： Hubert B. Hunt
发明人： Hubert B. Hunt
CPC分类号： G01V11/00
摘要： A method for determining a set of surface locations lying along a predetermined line of survey beneath which there is a relatively high probability of existing subsurface mineral bodies exhibiting relatively high density and relatively low magnetic susceptibility by selecting for membership in said set those surface locations lying in regions where a local minimum of magnetic field intensity substantially correlates to a local maximum of gravitational field intensity, those surface locations lying within regions of local topographic irregularity wherein the gravitational field intensity substantially directly correlates with the surface elevation, and those surface locations lying within regions wherein a steep gradient between a local maximum and an adjacent local minimum of the magnetic field intensities substantially directly correlates to a steep gradient between a local maximum and an adjacent local minimum of the gravitational field intensities.
摘要翻译： 一种用于确定沿着预定测量线的一组表面位置的方法，在该方法下，存在具有相对高的密度和相对低的磁化率的现有地下矿物的相对较高的可能性，通过选择所述组中的隶属度， 其中局部最小磁场强度基本上与重力场强度的局部最大值相关联的区域，位于局部地形不规则区域内的那些表面位置，其中重力场强度基本上与表面高度相关，以及位于区域内的那些表面位置 其中磁场强度的局部最大值和相邻局部最小值之间的陡峭梯度与重力场强度的局部最大值和相邻局部最小值之间的陡峭梯度基本上直接相关。
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公开(公告)号：US3082943A
公开(公告)日：1963-03-26
申请号：US72993758
申请日：1958-04-21
发明人： ZENOR HUGHES M
IPC分类号： G01V7/06
CPC分类号： G01V7/06
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公开(公告)号：US2801794A
公开(公告)日：1957-08-06
申请号：US21340451
申请日：1951-03-01
发明人： GARVIN WALTER W , LEGGETT JASPER R
IPC分类号： G01V7/06
CPC分类号： G01V7/06
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